\documentclass{pi1}
\usepackage{url}
\usepackage{tikz}

\begin{document}

\maketitle{2}{06.11.2012}{Sebastian Offermann}{11}{Tim Godthardt}{Liliana Dargel}{Michael Schulze}

%\input{A1}
%\include{A2}
%\include{A3}
\include{A4}

\end{document}